vulnerability / NVI-00012932 / Revision 1
SiYuan: getUniqueFilename passes an unvalidated client-supplied path to the filesystem, giving anonymous readers an existence oracle over the entire host filesystem
GitHub lists this reviewed advisory for github.com/siyuan-note/siyuan/kernel. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
5.8 medium
GitHub source severity; exploitability and local consequence require separate evidence.
As of · GitHub Advisory Database
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
github.com/siyuan-note/siyuan/kernel
source listed< 0.0.0-20260812083335-251596fc0de2
### Summary `/api/file/getUniqueFilename` takes a path from the request body and passes it to a filesystem existence check with no validation, confinement or authorization. The response distinguishes paths that exist from paths that do not, so an anonymous reader in publish mode can probe arbitrary locations on the host, one request per probe. Files and directories both work. Every neighbouring file route either requires an administrator or confines the path first. ### Details **Route.** `kernel/api/router.go:289` on master, `:292` on the development branch, `CheckAuth` only. **Handler,** `kernel/api/file.go:84`, in full: ```go util.ParseJsonArgs(arg, ret, util.BindJsonArg("path", &filePath, true, true)) ret.Data = map[string]any{"path": util.GetUniqueFilename(filePath)} ``` **The argument binder does no path handling.** `util.BindJsonArg` (`kernel/util/net.go:365`) takes two booleans, `required` (the key must be present) and `rejectEmpty` (the value must be non-empty). That is its entire contract. There is no `filepath.Clean`, no workspace join, no traversal check. An absolute path outside the workspace reaches `gulu.File.IsExist` unmodified. **The oracle.** `util/file.go:
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
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04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
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- GHSA-hf8h-97gm-4x2p ↗
GitHub Advisory Database · vendor advisory
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Public revision history
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- Revision 1 ·
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